Home / 280,520.64-421,403.74-173,983.33

Finding the Fourth Proportional to 280,520.64, 421,403.74 and 173,983.33

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Solution

The fourth proportional to 280,520.64, 421,403.74 and 173,983.33 is: 261,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520.64 : 421,403.74 = 173,983.33 : x
  2. Step 2: Convert to fraction form
    280,520.64/421,403.74 = 173,983.33/x
  3. Step 3: Cross multiply
    280,520.64x = 421,403.74 × 173,983.33
  4. Step 4: Simplify right side
    280,520.64x = 73,317,223,852.64
  5. Step 5: Solve for x
    x = 73,317,223,852.64/280,520.64
  6. Step 6: Final answer
    x = 261,361.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.